Simile. It's comparing using the word like.
It has stage, sound, and acting directions
Third person plural pronoun is THEY.
If you want to create a possessive pronoun out of that one, that would be THEIRS.
Possessive pronouns, as the name itself says, determine some kind of possession. For example:
Is this books yours? - No, it's theirs.
Answer: what do you need help with?
Explanation: cougar is a wild cat.